GRgreenavocado·Oct 19, 2026
You missed this internet classic https://github.com/twitter/the-algorithm/issues/1999
In Linux 7.3twitter
the-algorithm
Scala2022–2026
twitter / the-algorithm
the-algorithm
Source code for the X Recommendation Algorithm
104Distinct people
116Mentions
0Explicit recommenders
74.1KGitHub stars
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What it is
Source code for the X Recommendation Algorithm
GitHub
Where it is used
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What people are saying
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Also in these discussions
- twitter/the-algorithm-ml · linked in 5 of the same discussions
Mentioned in the same Hacker News threads. That is not proof they are substitutes.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 11:56:56 AM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year116 dated mentions
Observed mentions: 2022-04-25 21:01:53 UTC to 2026-10-19 13:35:30 UTC.
* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 78 | 14 | 64 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 13 | 1 | 12 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 16 | 3 | 13 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 6 | 1 | 5 |
What Hacker News says
116 sourcesThe names reminded me of https://github.com/twitter/the-algorithm/pull/1027
In Stwipe Acquires OpenWouterJust make a f___ing .EXE file and give it to me
2 points · Open discussionhttps://github.com/twitter/the-algorithm
If it catches engagement, the main firehose feed will show it. They've begun using Grok and AI processes, which is hit and miss, but definitely improving.
Having Japanese, French, other countries' tweets automatically translated back and forth has been fun, too. It'll be interesting to see where it gets to in the next few years.
In HBO Obtains DMCA Subpoena to Unmask 'Euphoria' Spoiler Account on XI wonder if this'll turn out like the last time they published their algorithm to great fanfare, and then didn't bother to ever update it: https://github.com/twitter/the-algorithm
In X For You Feed Algorithmwhat is the difference between this and https://github.com/twitter/the-algorithm
In X For You Feed AlgorithmThis is not believable. It's not syntactically valid Python.
https://github.com/twitter/the-algorithm/blob/c54bec0d4e029f...
In Source code for the X recommendation algorithmUnfortunately, this [0] cancels out everything ten-fold. The owner of the website is boosting the content of himself and the people he supports. This did not happen in the old twitter - not even close.
[0] https://github.com/twitter/the-algorithm/issues/236
In Source code for the X recommendation algorithmI browsed through it a bit and these are some details that raised questions or which I found interesting:
There's multiple mentions of slop, for example: SlopsAuthorScoreFeature in HomeTweetTypePredicates. That means everyone gets a slop score between 0 and 1, which makes me wish that it was openly visible and that people with a high slop score would get a little piggy emoji next to their name.
There's a CLIENT_TWEET_TAKE_SCREENSHOT action, which is likely used to keep track of when a (mobile, presumably) client takes a screenshot. I hadn't considered this before, but for a social media app where posts are often shared externally through screenshots, keeping track of this can give you another engagement metric.
They have two types of NSFW filters: isNsfw and isSoftNsfw, but I couldn't figure out the distinction. Other metadata types inclu
Read the rest
de: isGore, isViolent, isSpam, isLowQuality, isOcr.
In ContentFeatureAdapter there's a getTweetLengthType function which shows the range for each tweet type. This is used to set TWEET_LENGTH_TYPE elsewhere. I wonder if it would help your virality to switch up your tweet lengths to regularly put out tweets which hit every length category, or if it doesn't significantly affect your potential reach.
There's a hardcoded list of top-level Grok topics [0]. Just mildly interesting to see what they consider to be top-level categories. Anime has achieved a significant cultural victory by getting separated into its own major category.
The timeout values for different service request types varied a lot across the application, which makes me curious about how they settled on those numbers. This is a question I've pondered in the past but haven't gotten around to researching deeply.
[0] https://github.com/twitter/the-algorithm/blob/c54bec0d4e029f...
The file in question is now here: https://github.com/twitter/the-algorithm/blob/main/home-mixe...
author_is_elon, author_is_democrat, and author_is_republican are in fact gone. Now there is grok_politics_neutral, grok_politics_left, and grok_politics_right. This is in addition to a whole group of other categories, such as grok_category_sports and grok_category_music. All are based on annotations by Grok.
Importantly, this file is not used for recommendations. Everything in this file is only used for "metrics tracking purposes to measure how often we serve posts with various attributes." This would also have applied to author_is_elon.
In Source code for the X recommendation algorithmAlready posted above: https://github.com/twitter/the-algorithm/blob/c54bec0d4e029f...
It's redacted.
In Source code for the X recommendation algorithmNot only no weights. Not sure what people's expectations are but a lot of the time this isn't even valid code with all the redaction they did [1]. I'm confused as to who this is for, this surely isn't the repo they're working on, is it?
[1] https://github.com/twitter/the-algorithm/blob/main/trust_and...
In Source code for the X recommendation algorithmLooks pretty real:
https://github.com/twitter/the-algorithm/blob/7f90d0ca342b92...
When this started it really put me off X - I'd have tolerated, and almost liked the idea, of a freedom of speeech place. But a place that boosts its owners posts... Nope.
I'm out - it's such a big personal diss of me, I'm not interested any more.
In Source code for the X recommendation algorithmRIP author_is_elon, we hardly knew ye.
https://github.com/twitter/the-algorithm/issues/236
In Source code for the X recommendation algorithmSource code for the X recommendation algorithm
249 points · Open discussionShowing the 15 most recent of 116 sources. Enable JavaScript to search and browse every indexed mention.